The Wastewater Division of the Public Works Department administers and maintains sewage collection systems and treatment facilities for Nevada County Sanitation District Number 1.

There are 10 zones within the Sanitation District with facilities that collect and treat 1,245,000 gallons of wastewater each day. The Sanitation District provides sewer service to 5,230 accounts in western Nevada County with a population of 14,000.

For Sewer Emergencies or Odors Call:

(530) 265-1555

24 hours per day, 7 days per week

New Sewer Connections

New Sewer Connections & Annual Charges

Find information about connecting to a District sewer system and to obtain the necessary forms and specifications.  Apply for a Sewer Permit (PDF).
Supplemental Zone packets
Dark Horse
Eden Ranch
Mountain Lake Estates
Penn Valley/Valley Oak

Find yearly charges for one Equivalent Dwelling Unit (EDU) for connected properties in the respective zones of the District.
Districts and Zones

Districts & Zones

View Wastewater District Zones you can look up for additional information.
Sanitation District Codes

Sanitation District Codes

The Sanitation Code contains provisions related to sewers and sewerage systems and more.
Sewer System Management Plan

Sewer System Management Plan

View and download the Sanitary Sewer Management Plan (SSMP) requirements (PDF).